im not sure how to solve this

im not sure how to solve this

How much does helga make per week

The choices all have 1/2 in the answer but I keep getting a whole number

one mark question

A scientist sets up a pipette he will use to drip a chemical into a beaker full of water. The concentration of the chemical in the beaker over time is modeled by C(x), where x is time in minutes....

842 = 500(1.11)x I can't remember how to solver power x.

I am confused as to what the answer is to this equation and how to solve for x in this situation. Any help?

For each orders pair I have to determine whether the numbers is a soulution to the ordered pair

Trying to write an equation for a word problem.

7x2 - 10x - 1 = 0

I need help asap please

x^2 y^2/3 division by x ^3/2 y ^1/2 y ^-1/3

I need to simplify x^2+9/x^2-9 times x-3/x+3, but x^2+9 is prime so it can't be factored. HELP!

y = 2x + 1 Y = -4x + 7

{w|≥4} {w|>7}

What is the correct answer for: 12÷2(6-7+4)x2=

please help, I'm not sure how to do this!

Question for 5 marks.

The sum of three numbers is 119. The second number is 4 times the third. The third number is 7 more than the first. What are the numbers?

(x+2)(x-1)(x-8)>0