Preston reads for 20 minutes each night and practices his math facts for 5 minutes each night. after several days he had practiced math facts for 45 minutes. how many minutes did preston in the same time period

Math each whole number with a rational,exponential expression

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. what distance from city a is the point where the truck and the car will meet?

Evaluate the expression. (9 + 5)(3 + 2)0