The speed of a vehicle x hours after midnight was y mph, where y = 10x2 – 40x + 100. At what time or times did the vehicle speeds reach 65 mph? The times should be given as the number of hours...

The speed of a vehicle x hours after midnight was y mph, where y = 10x2 – 40x + 100. At what time or times did the vehicle speeds reach 65 mph? The times should be given as the number of hours...

An airplane makes a 1200km flight with a tailwind, and returns flying into the same wind. The total flying time is 4 hours 50 minutes, and the airplane's speed in still air is 500km/h. What is the...

A car was travelling at a constant speed of 19m/s, then accelerated for 10 seconds. The distance travelled during this time is d meters and is given by the formula d = 19t + t2, where t is the...

Henry is driving to Memphis. Suppose that the distance to his destination (in miles) is a linear function of his total driving time (in minutes). Henry has 56 miles to his destination after...

It's algebra

Yon made contributions to a Traditional IRA over the course of 35 working years. Her contributions averaged $2,000 annually. Yon was in the 28% tax bracket during her working years. The average annual...

Three formulas for calculating present value: Formula #1: PV= FV / (1+ i)^nt Formula #2: PVOA=C( 1/i - 1/i(1+ i )^nt Formula #3: PVAD=C (1/i - 1/i(1+i)^nt-1...

Create your own scenario of purchasing a home and include the mortgage amount. Solve for each calculation below and show your work. 1. Calculate the documentary stamp tax on the mortgage if this...

Lucia and Randy have signed a contract to purchase a home. The closing date is March 27, and the buyer owns the property on the day of closing. The selling price of the home is $852,500. Lucia and...

Purchasing discount points is a decision which can be financially justified or not justified. Create a unique example where purchasing discount points is justified, solve the problem, and explain...

Laurie is financing $360,000 to purchase a house. How much money will she save over the life of 30-year, fixed-rate loan by buying 3 points with a rate of 6.275% instead of not buying points with...

A new study abroad program sent 55 students to three popular destinations this semester. There were 7 more students sent to Indonesia than the Philippines. There 4 more than twice as many students...

Mike works in a toy store. One week, he worked 38 hours and made $220. The next week, he received a raise, so when he worked 30 hours he made $180. How much was his raise (to the nearest cent)?

write the equation of the line y=mx+b through the given point and the given slope

The pH of a solution ranges from 0 to 14. An acid has a pH less than 7. Pure water is neutral and has a pH of 7. The pH of a solution is given by pH equals negative log xpH=−logx where x represents...

-were sold, how were childrens' tickets?' Explain each step using substitution and elimination methods.

Never taken algebra before please help

Problem Page A chemical company makes two brands of antifreeze. The first brand is 55% pure antifreeze, and the second brand is 70% pure antifreeze. In order to obtain 60 gallons...

A construction crew is lengthening a road. Let y represent the total length of the road (in miles). Let x represent the number of days the crew has worked. Suppose that x and...

I need help with solving this unit rate problem. Please help me!!