Answer:
C. $3
Step-by-step explanation:
10% of $23.47 is 2.347. Just move the decimal over to the left one place and round up to get the closes dollar amount. Since the 4 is followed by a 7, which is greater than 5, the closest dollar amount would be $2.35. $2.35 is closer to $3 than it is to $1 so to tip the closest to 10%, you would tip $3.
The general equation is that for every red tile, there must be 12 blue ones.
Algebraically this is expressed as b = 12r where r is red and b is blue. Your teacher might like you to express it as y = 12x where y is blue and x is red. The meaning is the same.
For beginners it might be easier to say b = 12r. So if you have 15 reds then r = 15
b = 12 * r
b = 12 * 15
b = 180 blue tiles.
Answer:
-0.7(4x+9)
Step-by-step explanation:
-2.8x-6.3=-0.7(4x+9)
