The cost of watching videos on a website is represented by C(a) = 3.00a + 4.00, where a is the number of videos watched. The cost is increased by $15.00 if the downloading feature is enabled. Identify the new function H(a) for the cost of watching downloadable videos and the transformation that has been applied. A: H(a) = 3.00a + 19.00; shift 15 units up
B: H(a) = 18.00a + 4.00; shift 15 units up
C: H(a) = 18.00a + 4.00; shift 15 units down
D: H(a) = 3.00a + 19.00; shift 15 units down

susie has 7 apples

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.

the answer is d

step-by-step explanation:

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a