Find the number of those 4-digit numbers whose digits are non-increasing.

Evaluate 8j -k+148j−k+14 when j=0.25j=0.25 and k=1k=1.

Sara made $253 for 11 hours of work. at the same rate how much would he make for 7 hours of work?

How many liters of peroxide should be added to 12 liters of an 8% peroxide solution so that the resulting solution contains 16% peroxide?   original added new amount of peroxide 0.96 liters x 0.96 + x amount of solution 12 liters x 12 + x 0.18 liter 1.14 liters 1.92 liters 2.10 liters