3 (x+3) = 30 i have literally forgotten everything about algebra

What does the line y = 5x - 7 look like

Are these parallel, perpendicular, or neither? 2x-y = - 1 and 4x-2y=6

Deon set a goal to ride this bicycle 310 miles in in a month. He has biked 145 miles so far. If there are 4 days left in the month, about how many miles should Deon ride each day to reach to reach his goal? Explain

Millie went shopping and took £60 to spend. she spent 1/2 of her money on a pair of shoes, she then spent 2/3 of what she had left on a pair of jeans. how much money did she have left at the end of her shopping trip?

Huilan is 6 years older than Thomas. The sum of their ages is 80. What is Thomas's age?

10+8=2y what is the value of y

Y is 10 2y+x=4. Solve the system of equations using the substitution method

How to find the area of a rectangle if you only have the perimeter?

How do u write 5 times the difference between 25 and 10 in numerical expression

A 150 km trip was covered by a motorcycle going at an average speed of 75 km/h, by a bus doing 60 km/h, by a truck doing 50 km/h, and by a bicycle doing 20 km/h. What is the constant of variation?