Find the measure of angle R ((look at pic pls help)

A- 45
B- 60
C- 90
D- 30​

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

Jake bakes and sell apple pies. he sells each pie for $5.75 . the materials to make the pies cost $40. the boxes jake puts the pies in cost & 12.50 total. how many pies does jake need to sell to earn a profit of $50

Jessie and bob are financing $425,500 to purchase a house. they obtained a 30/8 balloon mortgage at 6.55%. what will their balloon payment be?