The local park has 4 bike racks. each rack holds15 bikes. there are 16 bikes in the bike racks. which expression shows the total number of empty spaces in the bike rack? a. (15×16)+4
b. (15×16)-4 c. (4×15)+16 do. (15×4)-16

1jessica's home town is a mid-sized city experiencing a decline in population. the following graph models the estimated population if the decline continues at the same rate. select the most appropriate unit for the measure of time that the graph represents. a. years b. hours c. days d. weeks