Jessica is planning a trip to South Africa. The following table shows some of her planned expenses for this trip, and whether these expenses are in US dollars ($) or South African rands (R). Item Cost Currency Guide book 216.41 R Walking shoes 702.33 R Passport 71.75 $ Car rental 996.78 R Plane ticket 3,741.85 R Hotel reservation 138.10 $ If the exchange rate of US dollars to South African rands is 1:7.4094, what is the current total of Jessica’s budget, in US dollars? Round all currencies to two decimal places. a. $763.54 b. $791.86 c. $973.39 d. $1,001.71

i used to know how to do this in 7th but i forget easily

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!