Simplify the expression
3. 9a- b-2a-10b
a. -7a+ 11b
b. 11a + 9b
c. -11a - 9b
d. 7a - 11b

4. 5(x + 10) + x
a. 6x + 15
b.5x + 15
c. 6x + 50
d. 4x - 50 me

Can (3,5 and square root 34) be sides on a right triangle?

Lin is writing an equation to model the proportional relationship between y, the total cost in dollars of downloading videos from a website, and x, the number of videos downloaded. she knows that the total cost to download 3 videos was $12. her work to find the equation is shown below. joylin’s work step 1 k= 3/12= 0.25 step 2 y= 0.25x where did joylin make her first error?

Question 27 of 28 1 point what is the slope of the line shown below? (3,-2) (2,-4)