Erin is buying produce at a store. she buys c cucumbers at $0.99 each and a apples at $0.79 each. what does the expression 0.99c+0.79a represent

When the ball has traveled a distance of

What is the expression in factored form? -x^2 + 3x + 28 a. (x-7)(x-4) b. -(x-7)(x+4) c. (x+4)(x+7) d. -(x-4)(x+7)

Hell . what are the solutions to `10x^2 - 38x - 8 = 0`? is this when i find the factors and use the numbers within the factors to determine the zeros? i hope that made sense lol