Pauline spent $7.50 every day for 3 days. which expression is the best choice to her determine the total amount of money she spent? a. (7.50) × (−3) = −22.50; she spent $22.50. b. (−7.50) × (3) = −22.50; she spent $22.50. c. (−7.50) × (−3) = 22.50; she spent $22.50. d. (7.50) × (3) = 22.50; she spent $22.50.

there are many solutions.

step-by-step explanation:

step 1: simplify both sides of the equation.

4x+6=4x^2+10x−4

step 2: subtract 4x^2+10x-4 from both sides.

4x+6−(4x^2+10x−4)=4x^2+10x−4−(4x^2+10x−4)

−4x^2−6x+10=0

step 3: factor left side of equation.

−2(2x+5)(x−1)=0

step 4: set factors equal to 0.

x=-5/2 or x=1

- both graphs increase on their domain.

- the graphs of both functions have the same x-intercept.

- neither graph has a y-intercept.