I forgot how to find the selling price of something

I forgot how to find the selling price of something

Please exaplane.

the sum of 7 times a number and 42 was -98. what was the number?

You have to write an expression.

I'm having trouble with this math word problem. Help?

Kerry and Luke biked a total of 18 miles in one weekend. Kerry biked 4miles more than Luke. Write a system of equations and solve it to find how far each boy biked.

An oil tank has to be drained for maintenance. The tank is shaped like a cylinder that is 3 ft long with a diameter of 1.4 ft . Suppose oil is drained at a rate of 1.7 ft3 per...

I am supposed to make an equation before I solve. Please help!!!

how many of each do they have.

confused please help me

I AM trying to find the original price of the question so please help me

a. Find the number of units that must be produced and sold to break even. At this level, what is the dollar amount coming in and going out? b. Write the profit function from producing and selling...

She plans to do this by blending together a high-quality bean costing $6.50 per pound and a cheaper bean at $2.00 per pound. To the nearest pound, find how much high-quality coffee bean and how much...

On one particular trip, they flew into the wind and the trip took 4 hours. The return trip with the wind behind them, only took about 3 hours. Find the speed of the wind and the speed of the...

If the total interest earned for the year was $550, how much was invested at each rate?

I have to find the number x

I believe it is because there are no x factors in the numerator but unsure.

Find two fractions with the same denominator, one positive and one negative, whose difference is 2/3

I must show all my work It helps me study better when I do that

what would be the translation in numbers and variables

need help working this out

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