The Center for Science and Industry sells adult tickets for $13 and children's tickets for $3. The expression 13a + 3c represents the total revenue from selling a adult tickets and children's tickets. Evaluate the algebraic expression 13a+3c for a = 135 and 404

Write an equation for the function that includes the points (1,4/5) and (2,2/3)

List x1, x2, x3, x4 where xi is the midpoint endpoint of the five equal intervals used to estimate the area under the curve of f(x) between x = 0 and x = 10.

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?