C = 15x + 50
let c be $125 since c represents the cost
15x + 50 = 125
15x = 125 - 50
15x = $75
x = 75 ÷ 15
x = 5
Answer:
$18.43
Step-by-step explanation:
19.61 decrease 6% =
19.61 × (1 - 6%) = 19.61 × (1 - 0.06) = 18.4334
Answer:
Option B
Step-by-step explanation:
Given quadratic equation is,
y = 2x² + 5x - 7
By comparing this equation with y = ax² + bx + c
a = 2, b = 5 and c = -7
Solution of the polynomial (2x² + 5x - 7) can be determined by the quadratic formula,

Substitute the values of a, b and c.


Therefore, Option B will be answer.