Sketch on cycle of sine y= -3 sin θ​

Iwant to know what 3g+5h+4g-2h is my teacher is too selfish to tell us

Write 17/20 as a decimal and as a percent.

At the electronics store you have a coupon for 20% off up to 2 cds you buy for cds with the original cost of $10.99 each the sales tax is 5% what is the total cost of your purchase