Answer:
T31= 278
Step-by-step explanation:
formula is Tn=a +(n-1)d
T31= 8+(31-1)9
T31=8+(30)9
T31=8+270
T31=278
Answer:
x=10
Step-by-step explanation:
1/5(x)-2/3=4/3
Add 2/3 to each side
1/5(x)-2/3+ 2/3=4/3+2/3
1/5x = 6/3
1/5 x = 2
Multiply each side by 5
1/5x *5 = 2*5
x = 10
<span>C) 7 x 103 is twice as large as 5 x 102</span>
Plug in 2 for x. f(20=2-51 = -49