The amount of radioactive uranium changes with time. the abscissas and ordinates of the points given are the time and amoung of radioactive uranimum, respectively. (0, 100), (0.5, 50) (1, 25). which exponential function best represents the relationship between f(t) and t? a. f(t) = 100(0.25)t b. f(t) = 0.25(100)t c. f(t) = 100 (0.5)t d. f(t) = 0.25(50)t

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step-by-step explanation:

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!