Mrs. ford used 2.351 gallons of gas on sunday, 4.15 gallons on wednesday, and 1.105 gallons on friday. how many gallons of gas did she use?
a.7.606 gallons
b.3.871 gallons
c.5.673 gallons
d.10.223 gallon

100 points, hi, i’m not sure how to get the equation from the graph and table.

Martha has a deck of cards. she has lost some of the cards, and now the deck only contains nine spades, eleven diamonds, eight clubs, and twelve hearts. martha predicts that whenever she draws a card from the deck without looking, she will draw a club one-fifth of the time. which activity would best allow martha to test her prediction? a. randomly draw a card from the box and see if it is a club. b. randomly draw a card. then, continue to draw another card until all eight clubs are drawn. c. randomly draw and replace a card 120 times. then, observe how close to 30 times a club is drawn. d. randomly draw and replace a card 100 times. then, observe how close to 20 times a club is drawn.

Calculate the average rate of change over the interval [1, 3] for the following function. f(x)=4(5)^x a. -260 b. 260 c. 240 d. -240