Consider the two lines l1: x=−2t, y=1+2t, z=3tl1: x=−2t, y=1+2t, z=3t and l2: x=−6+2s, y=3+2s, z=5+1sl2: x=−6+2s, y=3+2s, z=5+1s find the point of intersection of the two lines

Solve the system of equations. y= 2x y= x^2 - 15

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?

The jewelry store is having a sale. necklaces that were regularly priced at $23.50 are on sale for $18.80. what is the percentage of decrease in the price of necklaces?