Olve. Do your work on a separate she 1) Desmond gave Brenda 7 coins
worth 92¢. At least two of the coins
were quarters. What 7 coins did
Desmond give Brenda?

1 nickel, 1 dime, 3 quarters, and 2 pennies is the correct answer. 0.05 + 0.10 + 0.75 + 0.02 = 0.92. Plus there are only 7 coins and at least 2 quarters.

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."