What is the vertex of the function 7x^2 -28x-60?

a. (2,-88)
b. (3,56)
c. (2,88)
d. (3,-56)

Step-by-step explanation:

7x²-28x-60=7(x²-4x+4-4)-60

=7(x²-4x+4)-28-60

=7(x-2)²-88

vertex is (2,-88)

15

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)

25 questions , because they start with 100.  

350-100=250 .  

. 250/10=25

step-by-step explanation:

first take off 100, then what x 10 = 250? that is your answer. (25)