5. which situation is best represented
by the equation below?
co3 = 2.1
a gavin gave the cashier $3 when the
total was $2.10. find c, the amount of
change gavin received. allere al
b carley bought 3 packages of gum
that each had the same cost. the total
was $2.10. find c, the cost of each
package of gum.
c aunt peggy made 2.1 pounds of
fudge for each of her 3 nephews. find
c, the number of pounds of fudge aunt
peggy made.
d chris must give a speech that is no
longer than 3 minutes. he spoke for
2.1 minutes. find c, the number of
minutes chris has left.

i = 2 / - 5

step-by-step explanation:

evaluation of ( 2 - 4 ) ( p + q ) when p = 2 and q = 5 i, by putting values of p and q,                                                                    

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.

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step-by-step explanation:

i am not sure :

step-by-step explanation: