Reba needs to simplify the expression below.
61/2 + 3.5x 2-7 divided by 3
which operation should she perform first?
a. addition
b. subtraction
c. multiplication
d. division

John bought 5 lemons and used 2 of them for a salad how much did he use for.a salad . he used % of the lemons.

The number of hours per week that the television is turned on is determined for each family in a sample. the mean of the data is 37 hours and the median is 33.2 hours. twenty-four of the families in the sample turned on the television for 22 hours or less for the week. the 13th percentile of the data is 22 hours. approximately how many families are in the sample? round your answer to the nearest integer.

Acertain population of bacteria demonstrates exponential growth doubles in size every 4 days. how long will it take the population to triple in size?