Write the equation, use “X” to represent the unknown number. Solve for the unknown 20. The difference between a number and 16 is the square of (-5)

21. When three times A number is increased by five, The result is 10.

22. When is 3 sevenths of a number is decreased by two, The result is eight

Tree diagram to find the prime factors of 18

Jamie is hiking up a small mountain. he climbs up at a constant rate of 300 feet/hour until he reaches the peak at 1,500 feet. after that, he hikes down at the same rate to the base of the mountain. the equation that models jamie’s elevation, e, after t hours is e = . jamie’s elevation will be 600 feet after hours and after hours.

Abike shop sells you a bicycle for $63 and a helmet for $21. the total cost is 150% of what the shop spent originally. how much did the shop spend originally? how much profit did the bike shop earn by selling the bicycle and helmet to you ?