Ana has chosen a mobile phone plan that consists of a fixed payment of S / 30 per month, which includes 100 minutes of calls and 200 text messages. In addition, each minute and text message additionally, a recharge of S / 0.17 and S / 0.04, respectively. Which expression changes to calculate the consumption of a month? How much will Ana pay for a consumption of 226 minutes and 317 text messages?

step-by-step explanation:

always plug in x. in this case, x equals 4.

i'm going to first solve 4(2+3x)

1) 4(2+3(4)) use pemdas to solve.

i'm going to multiply whats in the parenthesis first, so 3 times 4=12.

2)4 (2+12) i'm then going to multiply 4 by both numbers in the parenthesis (because multiplying comes before adding)

4 times 2= 8.   4 times 12= 48

4) (8+48)= 56 (answer)

i'm then going to solve 8+12x and plug in 4 for x.

1) 8 +12(4)

multiplying comes before adding, so i'm gonna multiply 12 and 4.

12 times 4= 48.

2) 8+48=56

both equal the same!

1,150 give brainliest

step-by-step explanation

2r= 2300

r =1150

the answer is. -82562234434584

step-by-step explanation:

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.