A lake’s level dropped 3 3/4 inches for 21 days during a drought. A heavy rainstorm raised the level by 8.25 feet. Afterwards the level dropped 9.5 inches per day for 4 days. Scientists want to determine if the water level increased. Use your knowledge of rational numbers to determine the change in water level

step-by-step explanation:

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.

i'm sorry i don't know

step-by-step explanation: