Question 107318
First test : G
Second test : G+3
Third test : G+6
Fourth test : G+9
{{{(G+(G+3)+(G+6)+(G+9))/4=69.5}}}
{{{G+(G+3)+(G+6)+(G+9)=4*69.5}}}
{{{4G+18=278}}}
{{{4G=260}}}
{{{G=65}}}
Check your answer.
First test : 65
Second test : 68
Third test : 71
Fourth test : 74
{{{(65+68+71+74)/4=69.5}}}
{{{278/4=69.5}}}
{{{69.5=69.5}}}
True statement. 
Good answer. 
She scored a 65 on the first test.