1. Problem: Evaluate the expression $2x+3$ when $x=4$. Formula: Substitute $x=4$ into $2x+3$. Calculation: $2(4)+3=8+3=11$. Answer: b. 11 2. Problem: If $y=5$, find the value of $3y-2$. Formula: Substitute $y=5$ into $3y-2$. Calculation: $3(5)-2=15-2=13$. Answer: a. 13 3. Problem: Find the value of $4a+7$ when $a=3$. Formula: Substitute $a=3$ into $4a+7$. Calculation: $4(3)+7=12+7=19$. Answer: b. 19 4. Problem: If $x=2$, evaluate $3x^2 - 5x + 1$. Formula: Substitute $x=2$ into $3x^2 - 5x + 1$. Calculation: $3(2)^2 - 5(2) + 1=3(4)-10+1=12-10+1=3$. Answer: b. 3 5. Problem: Evaluate $2b - 3$ when $b=6$. Formula: Substitute $b=6$ into $2b - 3$. Calculation: $2(6)-3=12-3=9$. Answer: a. 9 6. Problem: If $c=4$, find $c^2 + 2c$. Formula: Substitute $c=4$ into $c^2 + 2c$. Calculation: $4^2 + 2(4)=16+8=24$. Answer: b. 24 7. Problem: Evaluate $6x - 4$ when $x=5$. Formula: Substitute $x=5$ into $6x - 4$. Calculation: $6(5)-4=30-4=26$. Answer: b. 26 8. Problem: If $y=3$, find $2y^2 + 5$. Formula: Substitute $y=3$ into $2y^2 + 5$. Calculation: $2(3)^2 + 5=2(9)+5=18+5=23$. Answer: a. 23 9. Problem: Evaluate $5a - 2$ when $a=7$. Formula: Substitute $a=7$ into $5a - 2$. Calculation: $5(7)-2=35-2=33$. Answer: a. 33 10. Problem: If $x=3$, find $x^3 - 2x + 4$. Formula: Substitute $x=3$ into $x^3 - 2x + 4$. Calculation: $3^3 - 2(3) + 4=27-6+4=25$. Answer: d. 25