(PLEASE HELP!!) Jamal is solving the equation 2x2+7x−5=0 with the quadratic formula.

Which values could he use for a, b, and c?

a = -2, b = -7, c = 5

a = 2, b = 7, c = -5

a = 2, b = -7, c = -5

a = 2, b = 7, c = 5

The function a represents the cost of manufacturing product a, in hundreds of dollars, and the function b represents the cost of manufacturing product b, in hundreds of dollars. a(t) = 5t + 2 b(t) = 7t - 2t +4 find the expression that describes the total cost of manufacturing both products, a(t) + b(t). a. 7t^2 - 7t + 2 b. 7t^2 + 3 +6 c. 7t^2 + 7t - 6 d. 7t^2 - 3t + 6

Tom wants to order tickets online so that he and three of his friends can go to a water park the cost of the tickets is 16.00 per person there is also a 2.50 one-time service fee for ordering tickets online write an expression in term of n that represents the cost for n ordering tickets online

Alicia puts $400 in a bank account. each year the account earns 5% simple interest. how much money will be in her bank account in six months?