An electrician charges $45 per hour plus a fixed charge of $30. Which of these equations could be used to determine C , the cost an electrician charges for h hours worked?

Matt had 5 library books. he checked out 1 additional book every week without retuening any books. whats the matching equation

Without any equipment, you can see stars that are 2{,}800{,}0002,800,0002, comma, 800, comma, 000 light-years away. by looking through a small telescope, you can see stars that are 3{,}112{,}000{,}0003,112,000,0003, comma, 112, comma, 000, comma, 000 light-years away. approximately how many times as far can you see using a small telescope as without any equipment?

Two similar figures have sides in the ratio of 2: 3. if a side of the smaller triangle has a length of 7, what is the length of the corresponding side of the other triangle? 4 10 14 21