Mark earned $13.50 mowing lawns on saturday. on sunday, he spent $6.95 when he purchased a movie ticket. he needed to borrow money from a friend to complete his purchase of a snack. how much money did mark pay for the snack if he owes his friend $5? $1.95 $6.55 $8.50 $11.55

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form

Amodel rocket is launched from a roof into a large field. the path of the rocket can be modeled by the equation y = -0.04x^2 + 8.6x + 4.8, where x is the horizontal distance, in meters, from the starting point on the roof and y is the height, in meters, of the rocket above the ground. how far horizontally from its starting point will the rocket land? a. 0.56 m b. 215.56 m c. 431.11 m d. 215.74 m