our entire family me , my mom , grandma , sister , and two brothers went to dinner . we each had a coupon for 3$ off the cost of thr buffet if altogether we paid 76.50$ what was the original cost ?

The value, v, of kalani’s stock investments over a time period, x, can be determined using the equation v=750(0.80)^-x. what is the rate of increase or decrease associated with this account? 20% decrease 20% increase 25% decrease 25% increase

Y=4x  –  10y=2what is the solution to the system of equations? (3, 2)   (2, 3)(–2, 2)(2,  –2)

Katy and her family went to the beach. first, they swam in the ocean for 55 minutes. then they built sand castles for 1 hour and 55 minutes and played volleyball for 1 hour and 45 minutes. when they finished playing volleyball, it was 2: 30 p.m. what time did katy's family get to the beach?