What is the value of c in the equation y = 4x^2 -10x + c if the y-coordinate of the vertex is -7

Step-by-step explanation:

Find the x-coordinate of the vertex with this formula:

In this case:

Substituting values, we get:

Now we can substitute the coordinates of the vertex into the equation and then solve for "c".

Then:

can you put the picture up?

step-by-step explanation:

(a) {a₁, a₁r, a₁r², … a₁rⁿ⁻¹, …}

(b) $59 398

step-by-step explanation:

(a) the annual sequence of profits

aₙ = a₁rⁿ⁻¹

the model for the sequence of profits is {a₁, a₁r, a₁r², … a₁rⁿ⁻¹, …} .

(b) profit after 15 yr

  a₁ = $ 30 000

  r = 1.05

a₁₅ = 30 000 × 1.05¹⁴

a₁₅ = 30 000 × 1.979 93

a₁₅ = $59 398

the profit in year 15 will be $59 398.