10 (x - 5) = - 80 i don't understand math that well lol

Zach gives abbey 8 pretzels. then he splits half of the pretzels he has left with maddie. zach lets p represent the number of pretzels he starts with. he finds that the number of pretzels that maddie has is 1/2 the difference of p and 8.

Write an algebraic expression for the word expression: 15 divided by the sum of "d" and 3

Pete Morton is planning to go to graduate school in a program of study that will take three years. Pete wants to have $8,000 available each year for various school and living expenses. Use Exhibit 1-D.

How many times larger is 2.4 x 108 than 6 x 107?

What is the slope of the line y = 9

Change the following numbers into percent 0.05

Calculate the discriminant: 5x² + 2x - 2 = 0

The Taco Shop sold 198 lunches Friday. This number is 3 more than 3 times the number they sold Monday. Let n represent the number of lunches sold Monday.

Susan received a $90 gift card for a coffee store she used it buying some coffee that cost $8.66 per pound after buying the coffee she had $64.02 left on a card how many pounds of coffee does she buy?

How many edges does a 3D pentagon have