Negative 10 decreased by 14 times a number

When i add money am i supposed to make it like this 7+12 or 7.00+12.00 because i got 19 dollars for my answer

Write the slope-intercept form of the line that passes through the point (1, 0) and is parallel to x - y = 7. t

Aprojectile is thrown upward so that its distance above the ground after t seconds is given by the function h(t) = -16t2 + 704t. after how many seconds does the projectile take to reach its maximum height?