I stuck with this one.

Simplify expression 3ab² - 5a²b + (-3a²b) - 4ab²

You need to earn at least 75. You earn 6 dollars for each hour you work. Write and Solve and inequality that represents the number of hours (H) that you need.

you invest $20000 into an account paying 9% annual interest rate. If the total earned is 1550 how long did you invest the money

The cost of a television is $429.99 after sales tax is added. If the sales tax is 7.5%, what was the cost of the television before sales tax was added? (A) $377.74 (B) $389.46 (C) $397.74 (D) $399.99 (E) $459.27

The SneakerRama Company makes and sells sneakers. They have one linear function that represents the cost of producing sneakers and another linear function that models how much income they get from those sneakers.

John works for 8 hours each day, starting at 9 a. m. He makes $18 an hour. How much money does John make in 5 days? A. 8 hours, 9 a. m., $18, 5 days B. 8 hours, 9 a. m., $18 C. 8 hours, 9 a. m., 5 days D. 8 hours, $18, 5 days

15 is 9 more than j. As an equation.

You buy 8 packs of markers with 20markers in each pack. You already had 10 markers. Which equation shows how to calculate the total number of markers, m, you have?

Runyon Company sells T-shirts ($5) and shorts ($6). If total sales were $1,040 and people bought 4 times as many T-shirts as shorts, what was the total number of T-shirts and shorts sold? A. 120; 60 B. 140; 40 C. 180; 60 D. 160; 40

W-4=-12-3w solve for w

552.5 is what percent of 425