Use mental math to approximate what a 15% tip would be for a bill of $31.99. a. $3.20 b. $4.80 c. $5.60 d. $6.40

The table shows the number of hours orlando spent at football practice last week. select the appropriate numbers below to complete the model to find the number of hours orlando spent practicing on tuesday and friday.

Calculate the mean value (expected value) of the following discrete variable x (10 points): x = 0, 1, 2, 3, 4, 5, 6 p(x) = 0.2, 0.2, 0.15, 0.15, 0.15, 0.1, 0.05

Y=x+2 4x+3y= -36 system of equation