Eudora ran from her home to her secret laboratory at an average speed of 12 km/h. She then took one of her jetpacks and flew to her school at an average speed of 76 km/h. Eudora traveled a total distance of 120 kilometers, and the entire trip took 2 hours. How long did Eudora spend running, and how long did she spend flying using her jetpack?
the multiplicative inverse of a fraction a/b is b/a. for the multiplicative inverse of a real number, divide 1 by the number. for example, the reciprocal of 5 is one fifth 1/5 or 0.2, and the reciprocal of 0.25 is 1 divided by 0.25, or 4.
i use my brain for prombles like this maybe you could try it
option c) graph of line going through 1, 4 and 3, 10
let y equal to margo's coin collection
let x equal to number of years
at the begining x=0, y=1 → point=(x,y)→point=(0,1)
she adds 3 coins per year, then y=1+3x
at x=1, y=1+3(1)=1+3→y=4→point=(x,y)→point=(1,4)
at x=3, y=1+3(3)=1+9→y=10→point=(x,y)→point=(3,10)
the graph of line going through (1, 4) and (3, 10), then the option c is the correct.