Corey went shopping and bought a pair of shoes for $65.99 and two caps for $15.99 each. If he was charged a sales tax of 8%, then about how much money did Corey have to pay? A.
$90
B.
$105
C.
$95
D.
$115

Terri makes a quilt using three sizes of fabric squares the side lenght of each fabric square is the square root of the area

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.

Astudy claims that the mean age of online dating service users is 40 years. some researchers think this is not accurate and want to show that the mean age is not 40 years. identify the null hypothesis, h0, and the alternative hypothesis, ha, in terms of the parameter μ. select the correct answer below: h0: μ≥40; ha: μ< 40 h0: μ≤40; ha: μ> 40 h0: μ≠40; ha: μ=40 h0: μ=40; ha: μ≠40